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Most scientists don't think so.
The reason the question isn't patently ludicrous is that a) physics doesn't really say much about what's inside the event horizon of a black hole, and b) the radius of the event horizon scales directly with mass for black holes. So the larger a black hole is, the lower its average density is. Galactic-mass black holes can have surprisingly low densities (again: on average; at the singularity, density is infinite).
It turns out that if you plug a reasonable guess for the mass of the observable universe into the equation for the Schwarzhild radius of a black hole, you get a radius of ... approximately the radius of the observable universe. Within a couple of orders of magnitude, anyway (and in cosmology, that's considered pretty close). So it's not as silly a question as it might appear at first.
However, the reason we don't think the universe is inside a black hole is that a) the universe is expanding, which is hard to reconcile with it being inside a black hole, and b) it doesn't look like the universe has enough mass to halt the expansion (in fact, the expansion appears to be accelerating).
There are a few, however, who do think it's possible. For some reason adding related links is not working, but do a Google search for "national geographic universe black hole" and you should find a recent (Feb 2014) article about it.
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What band of radiation is best for studying black holes?
X-rays are the best band for studying black holes as the radiations emitted by the black hole is X-rays so we can expect the presence of a black hole anywhere in the Universe.
Where do Black Holes lead to in space?
They don't "lead" anywhere. Any mass that falls into the black hole stays in the black hole. There is a theory that, in the case of rotating black holes, matter may emerge elsewhere from a "white hole". It's an idea that remains controversial and highly speculative.
Is a black hole an expanded star?
No. A black hole can be a very condensed star. It's also possible for "mini" black holes of less than stellar mass to exist. But in no case would it be possible to describe one as an "expanded" star.
What element is in a black hole?
It is not expected that elements would survive as such, within a black hole. Gravitational force would crush everything together to the point where no atomic nuclei remain intact.
What happens if a white hole gets sucked into a black hole?
A white hole (assuming they actually exist) is simply a small black hole, so nothing very spectacular would happen. The black hole would just get very slightly more massive (well, considerably more massive on a "how many ounces is that" scale; not so much on a "how many solar masses is that" scale).
When will a black hole hit your universe?
There are already black holes within the universe
In what part is a black hole in the universe?
Astronomers believe that black holes exist in the center of every universe. They even think that there may be a black hole in the center of our galaxy, the Milky Way
Can you make a black hole inside a black hole?
We know nothing about the conditions within a black hole, but it seems unlikely that a black hole could exist within a black hole, or even if this concept would have any meaning at all.
What are the different galaxy that exixt in the universe?
there are many galaxies that exist in the universe the one these are milky way galaxy,black hole,solar system
What would happen if there was no blackhole?
If there is no black hole, then no Universe, we will not be exist. That's why there is a Big Bang. The Universe started off with a Big Bang from a black hole. Though if you want to know what happens before our Universe, then you need to study 'String Theory' and the 'M theory'.
Does the black hole spaghettifie you?
depending on the size, stellar black hole , yes. Supermassive black holes, no, once you reach the singulaity you are outside of the universe, and you vanish, forever, you don't exist anymore.
Does a black hole have billions of stars in it?
No. A black hole intakes matter. After it is broken down by gravity. Then it releases it as particles (Neutrinos for example) There is not another universe within a black hole. Nor do stars or matter stay within the black hole. Of course all of this is theory with some really fun math attached to it.
Can a black hole be used to goto a different universe?
Scientists aren't even sureother universes exist. The possibility a black hole could even lead somewhere else is practically impossible. Whatever enters a black hole is virtually destroyed in a flash of raw energy. That's why scientists think that 99.999999999999% of the universe's antimatter is in black holes.
What is a thing of the universe with the letter B?
a black hole sport, a black hole.
Why cannot you believe that a black hole can be the centre of the universe?
Perhaps you are confusing Universe with galaxy. Most galaxies have a black hole in their center. The Universe has no such thing as a center.
Is the universe a black hole so to speak?
No, the universe is mostly a vacuum but a black hole is (theoretically) when gravity goes wild and rips a hole in space and time
What is going to happen when the black hole destroy the universe?
Well if it DOES happen and a black hole DOES destroy the Universe, then we won't be around to worry about it.
